Abdomen & Inguinal Ligament Flashcards
The abdomen is the region between the ___ and ____ .
thorax and pelvis
The separation between the thorax and the abdomen is the _____ diaphragm
respiratory
When separating the abdomen into four quadrants, the ____ is the midpoint.
umbilicus
Name the four quadrants of the abdomen
We have a right upper quadrant, right lower quadrant, left upper quadrant, and left lower quadrant for the abdomen.
When we talk about the anterolateral abdominal wall, we are talking about the ____ margin that is approximately from rib _ to rib _ and the ___ process on each side
subcostal, rib 10 to rib 7, xiphoid
What are the four muscles that makeup the anterolateral abdominal wall?
The rectus abdominis, the external oblique, the internal oblique, and the transverse abdominis
What are the muscles from superficial to deep in the anterolateral abdominal wall ?
The rectus abdominis, the external oblique, the internal oblique, and the transverse abdominis
The rectus abdominis is encased in a tendinous sheath or aponeurosis of the other (2/3) anterolateral abdominal wall muscles.
3
The 3 aponeurosis’ are fused along the midline at what is called the ____ and they are fused at what is called the ____ . They split again. They surround the rectus abdominis and reattach and refuse at the linea alba.
linea alba; semi lunar line
As the external oblique runs down in an inferomedial direction, the outer layer of the sheath definitely (does not have/has) external oblique aponeurosis in it, but we can’t say for sure how much of the internal oblique aponeurosis and how much of the transverse abdominis aponeurosis is in it.
has
The (external oblique/rectus abdominis) is a vertically oriented muscle that runs from the subcostal margin to the superior ramus and body of the pubic bone
rectus abdominis
There are transverse intersections of tendon on the (rectus abdominis/internal oblique) and what this does is it separates the muscle into variably distinct segments and that allows for a change in pull of the muscle as it contracts at each segment.
rectus abdominis
The (internal oblique/external oblique) has an inferomedial fiber orientation.
external oblique
The (rectus abdominis/external oblique) has multiple attachment sites and it is covering the entire anterolateral abdominal wall. It is the most external component.
external oblique
The (rectus abdominis/internal oblique) has a superomedial fiber orientation and almost a 90-degree change in orientation from the fibers of the external oblique.
internal oblique
The internal oblique is attached to part of the inguinal ligament (not distally), but as it comes through the inferior portion of the abdomen, it joins with the transverse abdominis tendon and creates what is called the ____ tendon.
conjoint
The internal oblique covers (the entire/ half of the) anterolateral abdominal wall.
the entire
The internal oblique runs further (anteriorly/posteriorly) than the external oblique and it attaches to the thoracolumbar fascia.
posteriorly
The thoracolumbar fascia has this combined connection with what two muscles in the anterolateral abdominal wall? Those two muscles will surround the quadratus lumborum with its anterior layer and middle layer. So there is a connection with these two muscles to lumbar stability. When it contracts it will pull on the thoracolumbar fascia and that is going to effect spinal stability.
The internal oblique and transverse abdominis
If we go with standing position (up right anatomic position) and I draw a line of pull. If the internal oblique contracts, the moving component is the (pelvis/thorax) and the line of pull is (contralateral/ipsilateral).
thorax; ipsilateral
So, when we are in anatomical neutral with feet on the ground and we contract our left internal oblique, it is going to contract to the (right/left)
left
If the thorax is the moving component, the right external oblique when contracted will pull the thorax to the (right/left).
left
The left internal oblique and the right external oblique can work (against each other/synergistically) together to turn the trunk.
synergistically
In anatomic neutral with our feet on the ground, using the trunk as the moving component, the external obliques when it contracts will turn the trunk (contralaterally/ipsilaterally).
contralaterally
In anatomic neutral with our feet on the ground, using the trunk as the moving component, the internal obliques when it contracts will turn the trunk (contralaterally/ipsilaterally).
ipsilaterally
In anatomic neutral with our feet on the ground, using the pelvis as the moving component, the internal obliques when it contracts will turn the trunk (contralaterally/ipsilaterally).
Contralaterally
In anatomic neutral with our feet on the ground, using the pelvis as the moving component, the external obliques when it contracts will turn the trunk (contralaterally/ipsilaterally).
Ipsilaterally
If the internal oblique and external oblique on the same side contract, you are going to get a (rotation/side bend) versus gravity.
side bend
A synergistic action between the internal and external obliques will go in the direction of the (external/internal) oblique if the thorax is the moving component.
internal
The transverse abdominus along with the internal oblique join with the thoracolumbar fascia (anteriorly/posteriorly). (Anteriorly/posteriorly) they join together at the conjoint tendon.
posteriorly; anteriorly
The conjoint tendon can be found (inferior/superior) to the superficial ring of the inguinal canal and you are going to find it (superficial/deep) to the external oblique aponeurosis and (medial/lateral) to the rectus abdominis.
superior; deep; lateral
The nerves and blood vessels of the anterolateral abdominal wall will run in-between what two muscles?
The internal oblique and transverse abdominis
The ventral rami that are coming around anteriorly from T7-T11 are known as ___ nerves because they run around the ribs. But when they enter the abdomen as they continue along their path and enter the abdomen, they become the ___ nerves.
intercostal; thoraco-abdominal
The T12 intercostal nerve is called the ____ nerve and it continues to the posterior abdominal wall and helps supply the anterolateral abdominal wall muscles.
subcostal